2221222220112 has 320 divisors, whose sum is σ = 6797588497920. Its totient is φ = 611784327168.

The previous prime is 2221222220051. The next prime is 2221222220131. The reversal of 2221222220112 is 2110222221222.

It is a super-3 number, since 3×2221222220112³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 629417964 + ... + 629421492.

It is an arithmetic number, because the mean of its divisors is an integer number (21242464056).

Almost surely, 2^{2221222220112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221222220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3398794248960).

2221222220112 is an abundant number, since it is smaller than the sum of its proper divisors (4576366277808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221222220112 is a wasteful number, since it uses less digits than its factorization.

2221222220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2221222220112 its reverse (2110222221222), we get a palindrome (4331444441334).

The spelling of 2221222220112 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twelve".